RUI: Fluctuations in the Microwave Sky: CBR and Foreground Sources

9320049鹦鹉宇宙微波背景辐射从宇宙大爆炸起源附近的某个时间到达我们。因此，它编码了关于早期宇宙的物理属性和关于宇宙内部结构的早期演化的独特信息。最近卫星探测到的CBR角变化为宇宙中超大规模结构的起源和演化提供了重要线索。该奖项将进行的研究是对较小尺度的CBR的研究，更好地匹配我们今天在宇宙中看到的结构的大小，如星系和星系团。首席调查员将用微波频率绘制一张天空区域的深度射电地图。这将是有史以来对天空进行的最灵敏的无线电“肖像”。他将使用哈勃太空望远镜和其他仪器对同一区域进行研究，以提供补充信息。特别是，人们希望这项研究将为星系形成的时间和方式提供更清晰的图景。此外，这项工作将使包括射电星系在内的前景源特性的研究成为可能。这些消息来源本身就是有意义的。此外，它们的排放干扰了对CBR本身的研究。这些观测将帮助天文学家确定这种干扰的特征并将其降至最低。本科生将全面参与所有的观察和分析。首席调查员被认为是这一研究领域的领导者。***

9320049 Partridge The cosmic microwave background radiation (CBR) reaches us from a time near the Big Bang origin of the Universe. As a consequence, it encodes unique information about the physical properties of the early Universe and about the early evolution of structure within the Universe. A recent satellite detection of angular variations in the CBR has provided important clues to the origin and evolution of very large-scale structure in the cosmos. The research to be conducted in this award is a study of the CBR on smaller scales, better matched to the size of structures we see in the Universe today, such as galaxies and clusters of galaxies. The Principal Investigator will make a deep radio map of a region of the sky at microwave frequencies. This will be the most sensitive radio "portrait" of the sky ever made. He will study the same area using the Hubble Space Telescope and other instruments to provide complementary information. In particular, it is hoped this research will provide a much clearer picture of when and how galaxies formed. In addition this work will enable studies of the properties of foreground sources, including radio galaxies. These sources are of interest in their own right. In addition, their emission interferes with attempts to study the CBR itself. The observations will help astronomers characterize and minimize this interference. Undergraduate students will be fully involved in all the observations and analysis. The Principal Investigator is regarded as a leader in this research area. ***